JPH0626322A - Muffler - Google Patents
MufflerInfo
- Publication number
- JPH0626322A JPH0626322A JP4181289A JP18128992A JPH0626322A JP H0626322 A JPH0626322 A JP H0626322A JP 4181289 A JP4181289 A JP 4181289A JP 18128992 A JP18128992 A JP 18128992A JP H0626322 A JPH0626322 A JP H0626322A
- Authority
- JP
- Japan
- Prior art keywords
- silencer
- sheet
- air
- muffler
- connection port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エアアクチュエータの
排気音消去に有用な消音器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silencer useful for eliminating exhaust noise of an air actuator.
【０００２】[0002]
【従来の技術】空気圧によって作動するエアアクチュエ
ータ、例えばエアシリンダ，エアモ−タ，エアバルブ等
では、排気ポ−トから空気を排出する際に空気排出音と
エアアクチュエータからの伝搬音とが混じり合った騒音
を発生する。従来ではこの騒音を消去するため図７に示
すような消音器が使用されている。2. Description of the Related Art In an air actuator operated by air pressure, for example, an air cylinder, an air motor, an air valve, etc., when exhausting air from an exhaust port, the air exhaust sound and the propagation sound from the air actuator are mixed. Generates noise. Conventionally, a silencer as shown in FIG. 7 is used to eliminate this noise.
【０００３】同図に示した消音器２１は、複数の排気孔
２２ａを周面に有しネジ溝付きの接続口２２ｂを一端部
に有する有底筒状のボディ２２と、周面に多数の排気孔
２３ａを有しボディ外側に環状の隙間を介して外嵌され
た筒状のカバ−２３と、両者の隙間に介装されたフェル
ト材２４とから構成されている。この消音器２１は接続
口２２ｂをエアアクチュエータの排気ポ−トに接続して
使用される。The muffler 21 shown in FIG. 1 has a bottomed cylindrical body 22 having a plurality of exhaust holes 22a on its peripheral surface and a connection port 22b with a thread groove at one end, and a large number of them on its peripheral surface. It is composed of a tubular cover 23 having an exhaust hole 23a and fitted on the outside of the body via an annular gap, and a felt material 24 interposed in the gap between the two. The muffler 21 is used by connecting the connection port 22b to the exhaust port of the air actuator.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の消音器２１
では、接続口から取り込まれた排出空気の流速を低下さ
せることで空気排出音を減衰させ、また伝搬音をフェル
ト材２４の内部細孔における空気振動と繊維抵抗によっ
て減衰させている。しかし、上記の構造では騒音レベル
を僅かに低下できるだけで、実用上好ましい消音効果を
得ることができない。DISCLOSURE OF THE INVENTION The above conventional silencer 21
In the above, the air discharge sound is attenuated by reducing the flow velocity of the exhaust air taken in from the connection port, and the propagation sound is attenuated by the air vibration and the fiber resistance in the inner pores of the felt material 24. However, the above structure can only slightly reduce the noise level, and cannot obtain a practically preferable silencing effect.
【０００５】本発明は上記事情に鑑みてなされたもの
で、その目的とするところは、優れた消音効果を発揮で
きる消音器を提供することにある。The present invention has been made in view of the above circumstances, and an object thereof is to provide a silencer capable of exhibiting an excellent silencing effect.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、請求項１では、接続口を有するボディに吸音材料か
ら成る消音体を配置して成る消音器において、複数枚の
多孔質シ−トを積み重ねて上記消音体を構成し、積み重
ね方向の一端を接続口に対峙させている。また、請求項
２では、請求項１における多孔質シ−トを、通気性が異
なる少なくとも２種類のシ−ト材から形成している。さ
らに、請求項３では、請求項１における多孔質シ−ト
を、厚み方向で通気性が変化するシ−ト材から形成して
いる。さらにまた、請求項４では、請求項１，２または
３における所定枚数毎の多孔質シ−トにエア室となる孔
を形成している。In order to achieve the above object, according to a first aspect of the present invention, there is provided a silencer in which a silencer made of a sound absorbing material is arranged in a body having a connection port, and a plurality of porous sheets are provided. The above-mentioned sound deadening body is constructed by stacking the above, and one end in the stacking direction faces the connection port. In the second aspect, the porous sheet according to the first aspect is formed from at least two kinds of sheet materials having different air permeability. Further, according to claim 3, the porous sheet according to claim 1 is formed from a sheet material whose air permeability changes in the thickness direction. Furthermore, in claim 4, holes for forming air chambers are formed in each of the predetermined number of porous sheets according to claim 1, 2 or 3.
【０００７】請求項５では、接続口を有するボディに吸
音材料から成る消音体を配置して成る消音器において、
長繊維を集束して形成された繊維束と該繊維束の外面に
巻き付けられた多孔質シ−トとから上記消音体を構成
し、繊維束の集束端を接続口に対峙させている。また、
請求項６では、請求項５の多孔質シ−トを、通気性が異
なる少なくとも２種類のシ−ト材から形成している。さ
らに、請求項７では、請求項５の多孔質シ−トを、厚み
方向で通気性が変化するシ−ト材から形成している。According to a fifth aspect of the present invention, there is provided a silencer in which a silencer made of a sound absorbing material is arranged in a body having a connection port,
The silencer is composed of a fiber bundle formed by bundling long fibers and a porous sheet wound around the outer surface of the fiber bundle, and the bundling end of the fiber bundle faces the connection port. Also,
In the sixth aspect, the porous sheet of the fifth aspect is formed from at least two kinds of sheet materials having different air permeability. Further, according to claim 7, the porous sheet according to claim 5 is formed from a sheet material whose air permeability changes in the thickness direction.
【０００８】請求項８では、接続口を有するボディに吸
音材料から成る消音体を配置して成る消音器において、
多孔質シ−トを筒状に複数回巻回して上記消音体を構成
し、その内面を接続口に対峙させている。また、請求項
９では、請求項８における多孔質シ−トを、通気性が異
なる少なくとも２種類のシ−ト材から形成している。さ
らに、請求項１０では、請求項８における多孔質シ−ト
を、厚み方向で通気性が変化するシ−ト材から形成して
いる。According to the present invention, in a muffler comprising a muffler made of a sound absorbing material arranged in a body having a connection port,
The muffler is constructed by winding the porous sheet in a cylindrical shape a plurality of times, and the inner surface of the muffler faces the connection port. In the ninth aspect, the porous sheet according to the eighth aspect is formed from at least two kinds of sheet materials having different air permeability. Furthermore, in the tenth aspect, the porous sheet according to the eighth aspect is formed from a sheet material whose air permeability changes in the thickness direction.
【０００９】[0009]
【作用】請求項１記載の消音器によれば、接続口から取
り込まれた排出空気の流速を低下させて空気排出音を減
衰できると共に、多層構造を有する多孔質シ−トの内部
細孔における空気振動によってアクチュエータからの伝
搬音を効果的に減衰できる。また、請求項２及び３記載
の消音器によれば、シ−ト積み重ね方向に形成される疎
密による膨脹及び圧縮作用によって上記伝搬音をさらに
減衰できる。さらに、請求項４記載の消音器によれば、
孔位置に形成されるエア室（空気層）のばね作用によっ
て上記伝搬音をさらに減衰できる。According to the muffler of the first aspect, the flow velocity of the exhaust air taken in from the connection port can be reduced to attenuate the air exhaust sound, and in the inner pores of the porous sheet having the multilayer structure. Air vibrations can effectively attenuate the sound propagated from the actuator. Further, according to the muffler of the second and third aspects, the propagating sound can be further attenuated by the expansion and compression actions due to the sparseness and denseness formed in the sheet stacking direction. Further, according to the silencer of claim 4,
The propagating sound can be further attenuated by the spring action of the air chamber (air layer) formed at the hole position.
【００１０】請求項５記載の消音器によれば、接続口か
ら取り込まれた排出空気の流速を低下させて空気排出音
を減衰できると共に、繊維束及び多孔質シ−トの内部細
孔における空気振動によってエアアクチュエータからの
伝搬音を減衰でき、しかも繊維束の長手方向に大きな減
衰距離を確保して伝搬音の吸音率を高めることができ
る。また、請求項６及び７記載の消音器によれば、シ−
ト重ね方向に形成される疎密による膨脹及び圧縮作用に
よって伝搬音をさらに減衰できる。According to the silencer of the fifth aspect, the flow velocity of the exhaust air taken in from the connection port can be reduced to attenuate the air exhaust sound, and the air in the pores of the fiber bundle and the porous sheet can be reduced. The vibration can attenuate the propagation sound from the air actuator, and further, a large attenuation distance can be secured in the longitudinal direction of the fiber bundle to increase the sound absorption coefficient of the propagation sound. Moreover, according to the silencer of Claim 6 and 7,
The propagated sound can be further attenuated by the expansion and compression effects due to the sparseness and denseness formed in the stacking direction.
【００１１】請求項８記載の消音器によれば、接続口か
ら取り込まれた排出空気の流速を低下させて空気排出音
を減衰できると共に、多層構造を有する多孔質シ−トの
内部細孔における空気振動によってエアアクチュエータ
からの伝搬音を効果的に減衰できる。また、請求項９及
び１０記載の消音器によれば、シ−ト重ね方向に形成さ
れる疎密による膨脹及び圧縮作用によって伝搬音をさら
に減衰できる。According to the muffler of the eighth aspect, the flow velocity of the exhaust air taken in from the connection port can be reduced to attenuate the air exhaust sound, and in the inner pores of the porous sheet having the multilayer structure. The air vibration can effectively attenuate the propagation sound from the air actuator. Further, according to the silencer of the ninth and tenth aspects, the propagation sound can be further attenuated by the expansion and compression actions due to the sparseness and denseness formed in the sheet stacking direction.
【００１２】[0012]
【実施例】図１乃至図３は本発明の第１実施例を示すも
ので、図１は消音器の断面図、図２は図１に示した消音
体の分解斜視図、図３は減衰作用を示す図である。本第
１実施例の消音器１は、ボディ２と、キャップ３と、消
音体４とから構成されている。1 to 3 show a first embodiment of the present invention. FIG. 1 is a sectional view of a silencer, FIG. 2 is an exploded perspective view of the silencer shown in FIG. 1, and FIG. It is a figure which shows an effect. The muffler 1 of the first embodiment is composed of a body 2, a cap 3 and a muffler 4.
【００１３】ボディ２は樹脂，金属等から円筒状に形成
されており、その周面には複数の排気孔２ａが、また一
端部にはネジ溝付きの接続口２ｂが夫々設けられてい
る。また、ボディ２の内部に消音体４を受け止める段部
２ｃが設けられている。キャップ３はボディ２と同材料
から略円板状に形成されており、ボディ２の開口端に嵌
合或いは螺合によって取り付けらている。The body 2 is formed of resin, metal or the like into a cylindrical shape, and a plurality of exhaust holes 2a are provided on the peripheral surface thereof, and a threaded connection port 2b is provided at one end thereof. Further, a step portion 2c that receives the silencer 4 is provided inside the body 2. The cap 3 is formed of the same material as the body 2 into a substantially disc shape, and is attached to the open end of the body 2 by fitting or screwing.
【００１４】消音体４は、円板状の第１シ−ト４ａと、
中央に孔４ｂ1 を有するリング状の第２シ−ト４ｂを、
中心を一致させて数十枚交互に積み重ねて構成されてい
る。両シ−ト４ａ，４ｂは樹脂繊維を結合して形成され
た不織布から成り、ボディ２の内径とほぼ一致した外径
を有している。また、第２シ−ト４ｂは第１シ−ト４ａ
よりもやや厚く形成され、また第１シ−ト４ａよりも繊
維密度（目付量）が大きい。この消音体４は一端を段部
２ｃに他端をキャップ３に夫々当接し、積み重ね方向の
一端を接続口２ｂに対峙してボディ２の内部に配置され
ている。The muffler 4 includes a disk-shaped first sheet 4a,
A ring-shaped second sheet 4b having a hole 4b1 in the center,
It is constructed by stacking dozens of sheets with their centers aligned. Both sheets 4a and 4b are made of a non-woven fabric formed by binding resin fibers, and have an outer diameter substantially equal to the inner diameter of the body 2. The second sheet 4b is the first sheet 4a.
It is formed to be slightly thicker than the first sheet 4a and has a larger fiber density (weight per unit area) than the first sheet 4a. The silencer 4 is disposed inside the body 2 with one end in contact with the step portion 2c and the other end in contact with the cap 3, and one end in the stacking direction facing the connection port 2b.
【００１５】第１実施例の消音器１は、従来と同様に接
続口２ｂをエアアクチュエータの排気ポ−トに接続して
使用される。エアアクチュエータ作動時に接続口２ｂか
ら取り込まれた排出空気は、消音体４及び排気孔２ａに
よってその流速を低下され、これにより空気が外部に放
出される際の騒音（空気排出音）が減衰される。The muffler 1 of the first embodiment is used by connecting the connection port 2b to the exhaust port of the air actuator as in the conventional case. The flow velocity of the exhaust air taken in from the connection port 2b when the air actuator is operated is reduced by the muffler 4 and the exhaust hole 2a, whereby the noise (air exhaust sound) when the air is released to the outside is attenuated. .
【００１６】また、エアアクチュエータからの伝搬音
は、両シ−ト４ａ，４ｂの内部細孔における空気振動と
繊維抵抗によって減衰されることは勿論、図３に示すよ
うに積み重ね方向に形成される疎密による膨脹及び圧縮
作用と、孔４ｂ1 位置に形成されたエア室（空気層）に
おけるばね作用及び反射波による相殺作用によって効果
的に減衰される。The propagation sound from the air actuator is attenuated by air vibration and fiber resistance in the inner pores of both sheets 4a and 4b, and is formed in the stacking direction as shown in FIG. It is effectively damped by the expansion and compression effects due to sparseness and denseness, the spring effect in the air chamber (air layer) formed in the hole 4b1 position, and the offsetting effect due to the reflected wave.
【００１７】ちなみに、ポリエステル繊維から成る外径
２２ｍｍ，厚さ０．１ｍｍ，目付量３５ｇ／ｍ2 の第１
シ−ト４ａと、同繊維から成る外径２２ｍｍ，内径１０
ｍｍ，厚さ１ｍｍ，目付量１００ｇ／ｍ2 の第２シ−ト
４ｂを交互に計７０枚積み重ねて消音体４を構成し、エ
ア圧約３．５Ｋｇ／ｃｍ2 ，測定時間５秒間の条件下に
おいて無音響室で騒音測定を行なった結果、消音器非取
付け状態で９０ｄＢの騒音レベルを６０ｄＢまで低下さ
せることができ、また両シ−トを交互に計５０枚積み重
ねて消音体４を構成した場合でも騒音レベルを２３ｄＢ
程度低下させることができ、従来に比べて格段の消音効
果を得ることができた。また、消音器非取付け状態にお
ける排気流量が３８ｍ3 ／ｈの場合で、前者の流量低下
は５ｍ3／ｈで、後者の流量低下は１ｍ3 ／ｈであり、
何れの場合もその流量低下が僅かに押さえられ、エアア
クチュエータ側に悪影響を排除できることが確認され
た。By the way, a first polyester fiber having an outer diameter of 22 mm, a thickness of 0.1 mm and a basis weight of 35 g / m 2 .
Sheet 4a and outer diameter 22 mm and inner diameter 10 made of the same fiber
mm, thickness 1 mm, and weight of 100 g / m 2 of the second sheet 4b are alternately stacked to form a total of 70 sheets to constitute the silencer 4, and the air pressure is about 3.5 Kg / cm 2 , and the measurement time is 5 seconds. As a result of noise measurement in a soundless room, the noise level of 90 dB can be reduced to 60 dB without the silencer attached, and a total of 50 sheets of both sheets are alternately stacked to constitute the silencer 4. Even if the noise level is 23 dB
It was possible to reduce the level to a lesser degree, and it was possible to obtain a much more silencing effect than before. When the exhaust flow rate is 38 m 3 / h when the silencer is not installed, the former flow rate decrease is 5 m 3 / h and the latter flow rate decrease is 1 m 3 / h,
In each case, it was confirmed that the decrease in the flow rate was slightly suppressed and the adverse effect on the air actuator side could be eliminated.
【００１８】図４及び図５は本発明の第２，第３実施例
を夫々示す消音器の断面図であり、上記第１実施例とは
第２の消音体５，６を夫々設けた点で異なる。FIG. 4 and FIG. 5 are sectional views of the silencers showing the second and third embodiments of the present invention, respectively. The second silencer 5 and 6 are respectively provided in comparison with the first embodiment. Different.
【００１９】図４に示した第２実施例では、第２シ−ト
４ｂと同様の不織布から成る帯状シ−トを、排気孔２ａ
が形成されたボディ１の周面に複数回巻き付けることに
よって第２の消音体５を構成してある。また、図５に示
した第３実施例では、第１，第２シ−ト４ｂと同様の不
織布から成る２種類の帯状シ−トを、半径方向で交互に
重なるようにボディ１の周面に複数回巻き付けることに
よって第２の消音体６を構成してある。In the second embodiment shown in FIG. 4, a belt-like sheet made of the same non-woven fabric as the second sheet 4b is attached to the exhaust hole 2a.
The second muffling body 5 is constructed by winding the body 1 around the peripheral surface of the body 1 several times. Further, in the third embodiment shown in FIG. 5, two kinds of strip-shaped sheets made of the same non-woven fabric as the first and second sheets 4b are arranged on the peripheral surface of the body 1 so as to be alternately overlapped in the radial direction. The second muffling body 6 is formed by wrapping a plurality of times around the.
【００２０】第２実施例の消音器１では、エアアクチュ
エータからの伝搬音を第２の消音体５の内部細孔におけ
る空気振動と繊維抵抗によってさらに減衰することがで
き、また第３実施例の消音器１ではシ−ト重ね方向に形
成される疎密による膨脹及び圧縮作用によってさらに減
衰効果を高めることができる。In the muffler 1 of the second embodiment, the sound propagated from the air actuator can be further attenuated by the air vibration and the fiber resistance in the inner pores of the second muffler 5, and in the third embodiment. In the muffler 1, the damping effect can be further enhanced by the expansion and compression actions due to the density formed in the sheet stacking direction.
【００２１】ちなみに、第２実施例に準じ、ポリエステ
ル繊維から成る外径２２ｍｍ，厚さ０．１ｍｍ，目付量
３５ｇ／ｍ2 の第１シ−ト４ａと、同繊維から成る外径
２２ｍｍ，内径１０ｍｍ，厚さ１ｍｍ，目付量１００ｇ
／ｍ2 の第２シ−ト４ｂを交互に計７０枚積み重ねて消
音体４を構成すると共に、第２シ−ト４ｂと同仕様の帯
状シ−トをボディ２の周面に２重巻きして第２の消音体
５を構成し、エア圧約３．５Ｋｇ／ｃｍ2 ，測定時間５
秒間の条件下において無音響室で騒音測定を行なった結
果、消音器非取付け状態で９０ｄＢの騒音レベルを５８
ｄＢまで低下させることができた。また、この場合の流
量低下は第１実施例の７０枚積層のものと同様であるこ
とが確認された。Incidentally, according to the second embodiment, the first sheet 4a made of polyester fiber and having an outer diameter of 22 mm, a thickness of 0.1 mm and a basis weight of 35 g / m 2 , and an outer diameter of 22 mm and an inner diameter made of the same fiber. 10mm, thickness 1mm, basis weight 100g
/ M 2 of the second sheet 4b are alternately stacked to form a total of 70 sheets to form the sound deadening body 4, and the band-shaped sheet having the same specifications as the second sheet 4b is double-wound on the peripheral surface of the body 2. Then, the second silencer 5 is configured, the air pressure is about 3.5 Kg / cm 2 , and the measurement time is 5
As a result of noise measurement in a soundless room under the condition of a second, a noise level of 90 dB is 58 when the silencer is not attached.
It was possible to reduce to dB. Further, it was confirmed that the decrease in the flow rate in this case was the same as that of the 70-sheet laminate of the first embodiment.
【００２２】また、第３実施例に準じ、消音体４を上記
と同様に構成すると共に、第１シ−ト４ａと同仕様の帯
状シ−トと第２シ−ト４ｂと同仕様の帯状シ−トを重ね
合わせてボディ２の周面に２重巻きして第２の消音体６
を構成し、上記同様の条件下において無音響室で騒音測
定を行なった結果、消音器非取付け状態で９０ｄＢの騒
音レベルを５６ｄＢまで低下させることができた。ま
た、この場合の流量低下も第１実施例の７０枚積層のも
のと同様であることが確認された。Further, according to the third embodiment, the silencer 4 is constructed in the same manner as described above, and the belt-shaped sheet having the same specifications as the first sheet 4a and the belt-shaped sheet having the same specifications as the second sheet 4b are used. The sheet is overlapped and double wound around the peripheral surface of the body 2 to provide the second silencer 6
As a result of performing noise measurement in a soundless room under the same conditions as above, it was possible to reduce the noise level of 90 dB to 56 dB in the state where the silencer was not attached. It was also confirmed that the decrease in the flow rate in this case was similar to that of the 70-sheet laminated structure of the first embodiment.
【００２３】尚、上記第１乃至第３実施例では消音体４
を構成する第２シ−ト４ｂとして孔４ｂ1 を有するもの
を用いたものを示したが、該孔４ｂ1 を中央以外の位置
に形成したものや１枚に２つ以上の孔を形成したものを
用いてもよく、また図６に示すように孔のないものを第
２シ−ト４ｂ´として使用した場合でもほぼ同等の消音
効果を得ることが可能である。In the first to third embodiments, the muffler 4 is used.
The second sheet 4b constituting the above has shown the one having the hole 4b1. The one having the hole 4b1 formed at a position other than the center or one having two or more holes formed therein is shown. It is also possible to use it, and it is possible to obtain almost the same muffling effect even when a holeless one is used as the second sheet 4b 'as shown in FIG.
【００２４】また、同実施例では厚み及び密度が異なる
２種類のシ−ト４ａ，４ｂを積み重ねて消音体４を構成
したものを示したが、各シ−トの厚みは等しくてもよい
ことは勿論であり、また密度が異なる３種類以上のシ−
トを順次積み重ねて消音体を構成しても同様の効果を得
ることができる。また、厚み方向で密度が変化するシ−
ト材、例えば密度が異なるシ−ト材を一体化したもの等
を用いれば積み重ね枚数を低減することができる。さら
に、密度が等しい同一仕様のシ−トを複数枚積み重ねて
消音体を構成するようにしても十分な消音効果を発揮さ
せることができる。Further, in the embodiment, the silencer 4 is constructed by stacking two kinds of sheets 4a and 4b having different thicknesses and densities, but the thickness of each sheet may be the same. Of course, there are three or more types of sheets with different densities.
The same effect can be obtained even if the sound absorber is constructed by sequentially stacking the components. In addition, the density changes in the direction of thickness.
The number of sheets to be stacked can be reduced by using a sheet material, for example, an integrated sheet material having different densities. Further, even if a plurality of sheets having the same specifications and having the same density are stacked to form a sound deadening body, a sufficient sound deadening effect can be exhibited.
【００２５】さらに、第２，第３実施例で示した第２の
消音体５，６を消音体４の周面に直接巻付けるようにし
てもよい。また、第３実施例では厚み及び密度が異なる
２種類のシ−トを巻付けて第２の消音体６を構成したも
のを示したが、上記と同様、各シ−トの厚みは等しくて
もよいことは勿論であり、また密度が異なる３種類以上
のシ−トを重ね合わせて巻付けて第２の消音体を構成す
るようにしても同様の効果を得ることができる。また、
厚み方向で密度が変化するシ−ト材、例えば密度が異な
るシ−ト材を一体化したもの等を用いれば巻付け作業性
を簡便化することができる。Further, the second silencers 5 and 6 shown in the second and third embodiments may be directly wound around the peripheral surface of the silencer 4. Further, in the third embodiment, the second silencer 6 is constructed by winding two kinds of sheets having different thicknesses and densities, but the thickness of each sheet is the same as above. Of course, the same effect can be obtained by stacking and winding three or more types of sheets having different densities to form the second silencer. Also,
Winding workability can be simplified by using a sheet material whose density changes in the thickness direction, for example, a sheet material in which sheet materials having different densities are integrated.
【００２６】さらにまた、第１乃至第３実施例で採用し
た不織布はポリエステル繊維以外の繊維材料、また接着
法，機械結合法，スパンボンド法等の何れで製造された
ものであってもよく、また多孔質のものあれば不織布の
代わりに連続気泡を持つ発泡シ−ト等を用いてもよい。Furthermore, the non-woven fabrics used in the first to third embodiments may be fiber materials other than polyester fibers, and may be manufactured by any of the bonding method, the mechanical bonding method, the spun bonding method, etc. If it is porous, a foamed sheet having open cells may be used instead of the nonwoven fabric.
【００２７】図８及び図９は本発明の第４実施例を示す
もので、図８は消音器の断面図、図９は図８に示した消
音体の斜視図である。本第４実施例は消音体７の構成を
上記第１実施例と異にしている。8 and 9 show a fourth embodiment of the present invention. FIG. 8 is a sectional view of the silencer, and FIG. 9 is a perspective view of the silencer shown in FIG. The fourth embodiment differs from the first embodiment in the structure of the silencer 7.
【００２８】この消音体７は、長さが一致した金属長繊
維を多数本円柱状に集束して形成した繊維束７ａと、樹
脂繊維を結合して形成された不織布から成り繊維束７ａ
の周面に複数回巻付けられた帯状シ−ト７ｂとから構成
されている。この消音体７の外径はボディ２の内径とほ
ぼ一致しており、一端を段部２ｃに他端をキャップ３に
夫々当接し、繊維束７ａの集束端を接続口２ｂに対峙し
てボディ２の内部に配置されている。The sound deadening body 7 is composed of a fiber bundle 7a formed by bundling a plurality of metal long fibers having the same length in a cylindrical shape and a non-woven fabric formed by bonding resin fibers to each other.
The belt-shaped sheet 7b is wound a plurality of times around the peripheral surface of the sheet. The outer diameter of the muffler 7 is substantially the same as the inner diameter of the body 2. One end of the muffler 7 abuts on the stepped portion 2c and the other end abuts on the cap 3, and the converging end of the fiber bundle 7a faces the connection port 2b. It is located inside 2.
【００２９】第４実施例の消音器１も、従来と同様に接
続口２ｂをエアアクチュエータの排気ポ−トに接続して
使用される。エアアクチュエータ作動時に接続口２ｂか
ら取り込まれた排出空気は、消音体７及び排気孔２ａに
よってその流速を低下され、これにより空気が外部に放
出される際の騒音（空気排出音）が減衰される。The silencer 1 of the fourth embodiment is also used by connecting the connection port 2b to the exhaust port of the air actuator as in the conventional case. The exhaust air taken in from the connection port 2b during the operation of the air actuator has its flow velocity reduced by the muffler 7 and the exhaust hole 2a, whereby the noise (air exhaust sound) when the air is released to the outside is attenuated. .
【００３０】また、エアアクチュエータからの伝搬音
は、繊維束７ａ及びシ−ト７ｂの内部細孔における空気
振動と繊維抵抗によって減衰されることは勿論、繊維束
７ａの内部に形成される長手方向の細孔によって大きな
減衰距離を確保して伝搬音の吸音率が大幅に高められ
る。The sound propagated from the air actuator is not only attenuated by the air vibration and the fiber resistance in the inner pores of the fiber bundle 7a and the sheet 7b, but also the longitudinal direction formed inside the fiber bundle 7a. The large pores ensure a large attenuation distance, and the sound absorption coefficient of propagating sound is significantly increased.
【００３１】ちなみに、径２５μｍのアルミニウム繊維
を２０ｍｍの外径で集束し、該繊維束７ａの周面にポリ
エステル繊維から成る厚さ０．１ｍｍ，目付量３５ｇ／
ｍ2のシ−ト７ｂを４重巻きして消音体７を構成し、エ
ア圧約３．５Ｋｇ／ｃｍ2 ，測定時間５秒間の条件下に
おいて無音響室で騒音測定を行なった結果、消音器非取
付け状態で９０ｄＢの騒音レベルを５７ｄＢまで低下さ
せることができた。また、消音器非取付け状態における
排気流量が３８ｍ3 ／ｈの場合で、その流量低下を３ｍ
3 ／ｈに押さえられることが確認された。By the way, aluminum fibers having a diameter of 25 μm are bundled with an outer diameter of 20 mm, and the peripheral surface of the fiber bundle 7a is made of polyester fibers having a thickness of 0.1 mm and a basis weight of 35 g /
m 2 of sheet - the door 7b 4 double winding to constitute the muffler body 7, an air pressure of about 3.5 Kg / cm 2, a result of performing a noise measurement in a non-acoustic chamber under the conditions of the measurement time of 5 seconds, silencer It was possible to reduce the noise level of 90 dB to 57 dB in the unattached state. If the exhaust flow rate is 38 m 3 / h when the silencer is not installed, decrease the flow rate by 3 m
It was confirmed that it could be suppressed to 3 / h.
【００３２】図１０は本発明の第５実施例を示す消音器
の断面図であり、上記第４実施例とは消音体８の構成を
異にしている。FIG. 10 is a sectional view of a silencer showing a fifth embodiment of the present invention, in which the silencer 8 has a different structure from that of the fourth embodiment.
【００３３】この消音体８は、長さの一致した金属長繊
維を多数本円柱状に集束して形成した繊維束８ａと、樹
脂繊維を結合して形成された不織布から成り半径方向で
交互に重なるように繊維束８ａの周面に複数回巻き付け
られた２種類の帯状シ−ト８ｂ，８ｃとから構成されて
いる。また、第２シ−ト８ｃは第１シ−ト８ｂよりもや
や厚く形成され、第１シ−ト８ｂよりも繊維密度（目付
量）が大きい。この消音体８の外径はボディ２の内径と
ほぼ一致しており、一端を段部２ｃに他端をキャップ３
に夫々当接し、繊維束８ａの集束端を接続口２ｂに対峙
してボディ２の内部に配置されている。The muffling body 8 is composed of a fiber bundle 8a formed by bundling a plurality of metal long fibers having the same length in a cylindrical shape and a non-woven fabric formed by bonding resin fibers, and alternates in the radial direction. It is composed of two types of belt-shaped sheets 8b and 8c which are wound a plurality of times around the peripheral surface of the fiber bundle 8a so as to overlap each other. The second sheet 8c is formed to be slightly thicker than the first sheet 8b, and has a fiber density (weight per unit area) larger than that of the first sheet 8b. The outer diameter of the muffling body 8 is substantially the same as the inner diameter of the body 2, one end of which is the step portion 2c and the other end of which is the cap 3
Are arranged inside the body 2 with the converging ends of the fiber bundles 8a facing the connection ports 2b.
【００３４】第５実施例の消音器１も、従来と同様に接
続口２ｂをエアアクチュエータの排気ポ−トに接続して
使用される。エアアクチュエータ作動時に接続口２ｂか
ら取り込まれた排出空気は、消音体８及び排気孔２ａに
よってその流速を低下され、これにより排出空気が外部
に放出される際の騒音が減衰される。The silencer 1 of the fifth embodiment is also used with the connection port 2b connected to the exhaust port of the air actuator, as in the conventional case. The exhaust air taken in from the connection port 2b at the time of operating the air actuator has its flow velocity reduced by the muffler 8 and the exhaust hole 2a, whereby the noise when the exhaust air is released to the outside is attenuated.
【００３５】また、エアアクチュエータからの伝搬音
は、繊維束８ａ及びシ−ト８ｂの内部細孔における空気
振動と繊維抵抗によって減衰されることは勿論、繊維束
８ａの内部に形成される長手方向の細孔によって大きな
減衰距離を確保して伝搬音の吸音率が大幅に高められ
る。さらに、第１，第２シ−ト８ｂ，８ｃの重ね方向に
形成される疎密による膨脹及び圧縮作用によって上記の
減衰効果を高めることができる。The sound transmitted from the air actuator is not only attenuated by the air vibration and the fiber resistance in the inner pores of the fiber bundle 8a and the sheet 8b, but also the longitudinal direction formed inside the fiber bundle 8a. The large pores ensure a large attenuation distance, and the sound absorption coefficient of propagating sound is significantly increased. Furthermore, the above-mentioned damping effect can be enhanced by the expansion and compression actions due to the sparseness and denseness formed in the stacking direction of the first and second sheets 8b and 8c.
【００３６】ちなみに、径２５μｍのアルミニウム繊維
を２０ｍｍの外径で集束し、該繊維束の周面にポリエス
テル繊維から成る厚さ０．１ｍｍ，目付量３５ｇ／ｍ2
の第１シ−ト８ｂと同繊維から成る厚さ１ｍｍ，目付量
１００ｇ／ｍ2 の第２シ−ト８ｂを重ね合わせて２重巻
きして消音体８を構成し、エア圧約３．５Ｋｇ／ｃ
ｍ2 ，測定時間５秒間の条件下において無音響室で騒音
測定を行なった結果、消音器非取付け状態で９０ｄＢの
騒音レベルを５６ｄＢまで低下させることができた。ま
た、消音器非取付け状態における排気流量が３８ｍ3 ／
ｈの場合では、その流量低下を３ｍ3 ／ｈに押さえられ
ることが確認された。By the way, aluminum fibers having a diameter of 25 μm are bundled with an outer diameter of 20 mm, and the peripheral surface of the fiber bundle is made of polyester fibers having a thickness of 0.1 mm and a basis weight of 35 g / m 2.
No. 1 sheet 8b and a second sheet 8b made of the same fiber and having a thickness of 1 mm and a basis weight of 100 g / m 2 are overlapped and wound twice to form a silencer 8, and the air pressure is about 3.5 kg. / C
As a result of noise measurement in a soundless room under the condition of m 2 and measurement time of 5 seconds, it was possible to reduce the noise level of 90 dB to 56 dB without the silencer. The exhaust flow rate when the silencer is not installed is 38m 3 /
In the case of h, it was confirmed that the decrease in the flow rate could be suppressed to 3 m 3 / h.
【００３７】尚、上記第４及び第５実施例に示した各消
音体７，８を構成する繊維束７ａ，８ａは、アルミニウ
ム繊維以外の金属繊維、或いは樹脂繊維で形成するよう
にしてもよく、また繊維束７ａ，８ａの周面に巻付けら
れるシ−トをボディ２の周面に巻付けるようにしてもよ
い。The fiber bundles 7a and 8a forming the silencers 7 and 8 shown in the fourth and fifth embodiments may be formed of metal fibers other than aluminum fibers or resin fibers. Alternatively, the sheet wound around the peripheral surfaces of the fiber bundles 7a and 8a may be wound around the peripheral surface of the body 2.
【００３８】また、第５実施例では厚み及び密度が異な
る２種類のシ−ト８ｂ，８ｃを繊維束８ａの周面に巻付
けて消音体８を構成したものを示したが、各シ−トの厚
みは等しくてもよいことは勿論であり、また密度が異な
る３種類以上のシ−トを重ね合わせて巻付けて消音体を
構成しても同様の効果を得ることができる。また、厚み
方向で密度が変化するシ−ト材、例えば密度が異なるシ
−ト材を一体化したもの等を用いれば巻付け作業性を簡
便化することができる。In the fifth embodiment, the silencer 8 is constructed by winding two kinds of sheets 8b and 8c having different thicknesses and densities around the peripheral surface of the fiber bundle 8a. Needless to say, the thicknesses of the mats may be the same, and the same effect can be obtained even if three or more types of sheets having different densities are superposed and wound to form a sound deadening body. Further, if a sheet material whose density changes in the thickness direction, for example, a sheet material in which sheet materials having different densities are integrated is used, winding workability can be simplified.
【００３９】さらに、第４及び第５実施例で採用した不
織布はポリエステル繊維以外の繊維材料、また接着法，
機械結合法，スパンボンド法等の何れで製造されたもの
であってもよく、また多孔質のものあれば不織布の代わ
りに連続気泡を持つ発泡シ−ト等を用いてもよい。Further, the non-woven fabrics adopted in the fourth and fifth embodiments are made of fiber materials other than polyester fiber, and the bonding method,
It may be manufactured by any of the mechanical bonding method and the spunbonding method. If it is porous, a foamed sheet having open cells may be used instead of the nonwoven fabric.
【００４０】図１１は本発明の第６実施例を示すも消音
器の断面図である。本第６実施例の消音器１１は、ボデ
ィ１２と、消音体１３とから構成されている。FIG. 11 is a sectional view of a muffler showing a sixth embodiment of the present invention. The silencer 11 according to the sixth embodiment includes a body 12 and a silencer 13.
【００４１】ボディ１２は有底円筒状に形成されてお
り、その周面には複数の排気孔１２ａが、また一端部に
はネジ溝付きの接続口１２ｂが夫々設けられている。ま
た、ボディ２の周面には消音体１３を受容する凹部１２
ｃが設けられている。The body 12 is formed in a cylindrical shape with a bottom, and a plurality of exhaust holes 12a are provided on the peripheral surface thereof, and a threaded connection port 12b is provided at one end thereof. Further, on the peripheral surface of the body 2, a recess 12 for receiving the silencer 13 is formed.
c is provided.
【００４２】消音体１３は、樹脂繊維を結合して形成さ
れた不織布から成りボディ１２の周面に複数回巻付けら
れた帯状シ−トから構成されており、その内面を排気孔
１２ａを通じて接続口１２ｂに対峙している。The sound deadening body 13 is made of a non-woven fabric formed by binding resin fibers, and is composed of a belt-shaped sheet wound a plurality of times around the peripheral surface of the body 12. The inner surface of the sound deadening body 13 is connected through an exhaust hole 12a. It faces the mouth 12b.
【００４３】第６実施例の消音器１１も、従来と同様に
接続口２ｂをエアアクチュエータの排気ポ−トに接続し
て使用される。エアアクチュエータ作動時に接続口１２
ｂから取り込まれた排出空気は、排気孔１２ａ及び消音
体１３によってその流速を低下され、これにより排出空
気が外部に放出される際の騒音が減衰される。The muffler 11 of the sixth embodiment is also used by connecting the connection port 2b to the exhaust port of the air actuator as in the conventional case. Connection port 12 when the air actuator is activated
The flow rate of the exhaust air taken in from b is reduced by the exhaust hole 12a and the muffler 13, and thereby the noise when the exhaust air is released to the outside is attenuated.
【００４４】また、エアアクチュエータからの伝搬音
は、多層構造を有する消音体１３の内部細孔における空
気振動と繊維抵抗によって効果的に減衰される。Further, the sound propagated from the air actuator is effectively damped by the air vibration and the fiber resistance in the inner pores of the silencer 13 having the multi-layer structure.
【００４５】ちなみに、ボディ１２の周面にポリエステ
ル繊維から成る厚さ０．１ｍｍ，目付量３５ｇ／ｍ2 の
帯状シ−トを５．５重巻きして消音体１３を構成し、エ
ア圧約３．５Ｋｇ／ｃｍ2 ，測定時間５秒間の条件下に
おいて無音響室で騒音測定を行なった結果、消音器非取
付け状態で９０ｄＢの騒音レベルを６８ｄＢまで低下さ
せることができた。また、消音器非取付け状態における
排気流量が３８ｍ3 ／ｈの場合ではその流量低下が殆ど
ないことが確認された。By the way, a belt-shaped sheet made of polyester fiber and having a thickness of 0.1 mm and a basis weight of 35 g / m 2 is wound 5.5 times around the peripheral surface of the body 12 to form the silencer 13, and the air pressure is about 3 As a result of noise measurement in a soundless room under the conditions of 0.5 Kg / cm 2 and measurement time of 5 seconds, it was possible to reduce the noise level of 90 dB to 68 dB without the silencer. In addition, it was confirmed that there was almost no decrease in the flow rate when the exhaust gas flow rate was 38 m 3 / h when the silencer was not attached.
【００４６】図１２は本発明の第７実施例を示す消音器
の断面図であり、上記第６実施例とは消音体１４の構成
を異にしている。FIG. 12 is a sectional view of a silencer showing a seventh embodiment of the present invention, in which the structure of the silencer 14 is different from that of the sixth embodiment.
【００４７】この消音体１４は、樹脂繊維を結合して形
成された不織布から成り半径方向で交互に重なるように
ボディ１２の周面に複数回巻き付けられた２種類の帯状
シ−ト１４ａ，１４ｂとから構成されている。また、第
２シ−ト１４ｂは第１シ−ト１４ａよりもやや厚く形成
され、第１シ−ト１４ａよりも繊維密度（目付量）が大
きい。The silencer 14 is made of a non-woven fabric formed by binding resin fibers, and two types of belt-shaped sheets 14a and 14b wound around the peripheral surface of the body 12 so as to be alternately overlapped in the radial direction. It consists of and. Further, the second sheet 14b is formed to be slightly thicker than the first sheet 14a, and has a higher fiber density (weight per unit area) than the first sheet 14a.
【００４８】第６実施例の消音器１１も、従来と同様に
接続口２ｂをエアアクチュエータの排気ポ−トに接続し
て使用される。エアアクチュエータ作動時に接続口１２
ｂから取り込まれた排出空気は、排気孔１２ａ及び消音
体１４によってその流速を低下され、これにより排出空
気が外部に放出される際の騒音が減衰される。The silencer 11 of the sixth embodiment is also used by connecting the connection port 2b to the exhaust port of the air actuator as in the conventional case. Connection port 12 when the air actuator is activated
The flow rate of the exhaust air taken in from b is reduced by the exhaust hole 12a and the muffling body 14, whereby the noise when the exhaust air is released to the outside is attenuated.
【００４９】また、エアアクチュエータからの伝搬音
は、多層構造を有する消音体１４の内部細孔における空
気振動と繊維抵抗によって効果的に減衰され、また第
１，第２シ−ト１４ａ，１４ｂの重ね方向に形成される
疎密による膨脹及び圧縮作用によってその減衰効果を高
められる。Further, the sound propagated from the air actuator is effectively attenuated by the air vibration and the fiber resistance in the inner pores of the silencer 14 having the multi-layered structure, and the sound of the first and second sheets 14a and 14b is also attenuated. The damping effect can be enhanced by the expansion and compression effects due to the sparseness and denseness formed in the stacking direction.
【００５０】ちなみに、ボディ１２の周面にポリエステ
ル繊維から成る厚さ０．１ｍｍ，目付量３５ｇ／ｍ2 の
第１シ−ト１４ａと、同繊維から成る厚さ１ｍｍ，目付
量１００ｇ／ｍ2 の第２シ−ト１４ｂを重ね合わせて２
重巻きして消音体１４を構成し、エア圧約３．５Ｋｇ／
ｃｍ2 ，測定時間５秒間の条件下において無音響室で騒
音測定を行なった結果、消音器非取付け状態で９０ｄＢ
の騒音レベルを６４ｄＢまで低下させることができた。
また、消音器非取付け状態における排気流量が３８ｍ3
／ｈの場合では、その流量低下を１ｍ3 ／ｈに押さえら
れることが確認された。By the way, on the peripheral surface of the body 12, a first sheet 14a made of polyester fiber having a thickness of 0.1 mm and a basis weight of 35 g / m 2 and a thickness of 1 mm made of the same fiber and a basis weight of 100 g / m 2 were used. 2 sheets of the second sheet 14b
The sound deadening body 14 is constructed by double winding, and the air pressure is about 3.5 kg /
As a result of noise measurement in a soundless room under the condition of cm 2 and measurement time of 5 seconds, 90 dB without silencer
It was possible to reduce the noise level to 64 dB.
Also, the exhaust flow rate when the silencer is not installed is 38 m 3
In the case of / h, it was confirmed that the decrease in the flow rate could be suppressed to 1 m 3 / h.
【００５１】尚、上記第７実施例では厚み及び密度が異
なる２種類のシ−ト１４ａ，１４ｂを巻付けて消音体１
４を構成したものを示したが、各シ−トの厚みは等しく
てもよいことは勿論であり、また３種類以上のシ−トを
重ね合わせて巻付けて消音体を構成しても同様の効果を
得ることができる。また、厚み方向で密度が変化するシ
−ト材、例えば密度が異なるシ−ト材を一体化したもの
等を用いれば巻付け作業性を簡便化することができる。In the seventh embodiment, two types of sheets 14a and 14b having different thicknesses and densities are wound around the silencer 1.
Although the sheet No. 4 is shown, it goes without saying that the thickness of each sheet may be the same, and the same applies even if three or more types of sheets are superposed and wound to form a silencer. The effect of can be obtained. Further, if a sheet material whose density changes in the thickness direction, for example, a sheet material in which sheet materials having different densities are integrated is used, winding workability can be simplified.
【００５２】また、第６及び第７実施例で採用した不織
布はポリエステル繊維以外の繊維材料、また接着法，機
械結合法，スパンボンド法等の何れで製造されたもので
あってもよく、また多孔質のものあれば不織布の代わり
に連続気泡を持つ発泡シ−ト等を用いてもよい。Further, the non-woven fabrics adopted in the sixth and seventh embodiments may be fiber materials other than polyester fibers, and may be manufactured by any of the bonding method, mechanical bonding method, spun bonding method, etc. If it is porous, a foamed sheet having open cells may be used instead of the nonwoven fabric.
【００５３】上述した各実施例の消音器は、各種エアア
クチュエータの排気ポ−トに直接接続する場合は勿論の
こと、エアホ−ス等を介して間接的に接続する場合にも
優れた消音効果を発揮できる。また、同消音器は各種エ
アアクチュエータの吸気ポ−トに接続して吸気音の減衰
に使用することも可能である。The muffler of each of the above-described embodiments is excellent not only when directly connected to the exhaust ports of various air actuators but also when it is indirectly connected through an air hose or the like. Can be demonstrated. The muffler can also be connected to the intake ports of various air actuators and used to attenuate intake noise.
【００５４】[0054]
【発明の効果】以上詳述したように、本発明によれば、
エアアクチュエータの排気時に発生する騒音を効果的に
減衰することができ、従来に比べて格段の消音効果を得
ることができる。As described in detail above, according to the present invention,
The noise generated when the air actuator is exhausted can be effectively attenuated, and a significant noise reduction effect can be obtained compared to the conventional case.
【図１】 本発明の第１実施例を示す消音器の断面図FIG. 1 is a sectional view of a silencer showing a first embodiment of the present invention.
【図２】 図１に示した消音体の分解斜視図FIG. 2 is an exploded perspective view of the silencer shown in FIG.
【図３】 第１実施例の減衰作用を示す図FIG. 3 is a diagram showing a damping action of the first embodiment.
【図４】 本発明の第２実施例を示す消音器の断面図FIG. 4 is a sectional view of a silencer showing a second embodiment of the present invention.
【図５】 本発明の第３実施例を示す消音器の断面図FIG. 5 is a sectional view of a silencer showing a third embodiment of the present invention.
【図６】 消音体の他の例を示す分解斜視図FIG. 6 is an exploded perspective view showing another example of the silencer.
【図７】 従来例を示す消音器の断面図FIG. 7 is a cross-sectional view of a silencer showing a conventional example.
【図８】 本発明の第４実施例を示す消音器の断面図FIG. 8 is a sectional view of a silencer showing a fourth embodiment of the present invention.
【図９】 図８に示した消音体の斜視図FIG. 9 is a perspective view of the silencer shown in FIG.
【図１０】 本発明の第５実施例を示す消音器の断面図FIG. 10 is a sectional view of a silencer showing a fifth embodiment of the present invention.
【図１１】 本発明の第６実施例を示す消音器の断面図FIG. 11 is a sectional view of a silencer showing a sixth embodiment of the present invention.
【図１２】 本発明の第７実施例を示す消音器の断面図FIG. 12 is a sectional view of a silencer showing a seventh embodiment of the present invention.
１…消音器、２…ボディ、２ｂ…接続口、４…消音体、
４ａ…第１シ−ト、４ｂ，４ｂ´…第２シ−ト、４ｂ1
…孔、５，６…第２の消音体、７…消音体、７ａ…繊維
束、７ｂ…シ−ト、８…消音体、８ａ…繊維束、８ｂ…
第１シ−ト、８ｃ…第２シ−ト、１１…消音器、１２…
ボディ、１２ｂ…接続口、１３…消音体、１４…消音
体、１４ａ…第１シ−ト、１４ｂ…第２シ−ト。1 ... Silencer, 2 ... Body, 2b ... Connection port, 4 ... Silencer,
4a ... 1st sheet, 4b, 4b '... 2nd sheet, 4b1
... Holes, 5, 6 ... Second silencer, 7 ... Silencer, 7a ... Fiber bundle, 7b ... Sheet, 8 ... Silencer, 8a ... Fiber bundle, 8b ...
1st sheet, 8c ... 2nd sheet, 11 ... Silencer, 12 ...
Body, 12b ... Connection port, 13 ... Silencer, 14 ... Silencer, 14a ... 1st sheet, 14b ... 2nd sheet.
Claims (10)
る消音体を配置して成る消音器において、 複数枚の多孔質シ−トを積み重ねて上記消音体を構成
し、積み重ね方向の一端を接続口に対峙させた、 ことを特徴とする消音器。1. A silencer in which a silencer made of a sound absorbing material is disposed in a body having a connection port, wherein a plurality of porous sheets are stacked to form the silencer, and one end in the stacking direction is connected. A silencer characterized by facing the mouth.
とも２種類のシ−ト材から成る、 ことを特徴とする請求項１記載の消音器。2. The silencer according to claim 1, wherein the porous sheet is made of at least two kinds of sheet materials having different air permeability.
化するシ−ト材から成る、 ことを特徴とする請求項１記載の消音器。3. The muffler according to claim 1, wherein the porous sheet is made of a sheet material whose air permeability changes in the thickness direction.
る孔を形成した、 ことを特徴とする請求項１，２または３記載の消音器。4. The silencer according to claim 1, wherein holes for air chambers are formed in a predetermined number of porous sheets.
る消音体を配置して成る消音器において、 長繊維を集束して形成された繊維束と該繊維束の外面に
巻き付けられた多孔質シ−トとから上記消音体を構成
し、繊維束の集束端を接続口に対峙させた、 ことを特徴とする消音器。5. A silencer comprising a sound absorbing body made of a sound absorbing material arranged in a body having a connection port, wherein a fiber bundle formed by bundling long fibers and a porous sheet wound around the outer surface of the fiber bundle. -A silencer characterized by comprising the above-mentioned silencer with a toe, and the converging end of the fiber bundle facing the connection port.
とも２種類のシ−ト材から成る、 ことを特徴とする請求項５記載の消音器。6. The silencer according to claim 5, wherein the porous sheet is made of at least two kinds of sheet materials having different air permeability.
化するシ−ト材から成る、 ことを特徴とする請求項５記載の消音器。7. The silencer according to claim 5, wherein the porous sheet is made of a sheet material whose air permeability changes in the thickness direction.
る消音体を配置して成る消音器において、 多孔質シ−トを筒状に複数回巻回して上記消音体を構成
し、その内面を接続口に対峙させた、 ことを特徴とする消音器。8. A silencer in which a silencer made of a sound absorbing material is arranged in a body having a connection port, wherein a porous sheet is wound around a cylinder a plurality of times to form the silencer, and an inner surface of the silencer is formed. A silencer characterized by facing the connection port.
とも２種類のシ−ト材から成る、 ことを特徴とする請求項８記載の消音器。9. The silencer according to claim 8, wherein the porous sheet is made of at least two kinds of sheet materials having different air permeability.
変化するシ−ト材から成る、 ことを特徴とする請求項８記載の消音器。10. The silencer according to claim 8, wherein the porous sheet is made of a sheet material whose air permeability changes in the thickness direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4181289A JPH0626322A (en) | 1992-07-08 | 1992-07-08 | Muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4181289A JPH0626322A (en) | 1992-07-08 | 1992-07-08 | Muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0626322A true JPH0626322A (en) | 1994-02-01 |
Family
ID=16098085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4181289A Pending JPH0626322A (en) | 1992-07-08 | 1992-07-08 | Muffler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0626322A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015142854A (en) * | 2009-10-23 | 2015-08-06 | エア・ウォーター防災株式会社 | Gas fire-extinguishing facility |
| US11639676B2 (en) | 2019-06-17 | 2023-05-02 | Tenneco Automotive Operating Company Inc. | Vehicle exhaust system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51139301A (en) * | 1975-04-16 | 1976-12-01 | Freudenberg Carl | Silencer |
| JPS5297351U (en) * | 1976-01-19 | 1977-07-21 | ||
| JPS5487331U (en) * | 1977-12-02 | 1979-06-20 | ||
| JPS6159819U (en) * | 1984-09-26 | 1986-04-22 | ||
| JPH0180601U (en) * | 1987-11-18 | 1989-05-30 |
-
1992
- 1992-07-08 JP JP4181289A patent/JPH0626322A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51139301A (en) * | 1975-04-16 | 1976-12-01 | Freudenberg Carl | Silencer |
| JPS5297351U (en) * | 1976-01-19 | 1977-07-21 | ||
| JPS5487331U (en) * | 1977-12-02 | 1979-06-20 | ||
| JPS6159819U (en) * | 1984-09-26 | 1986-04-22 | ||
| JPH0180601U (en) * | 1987-11-18 | 1989-05-30 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015142854A (en) * | 2009-10-23 | 2015-08-06 | エア・ウォーター防災株式会社 | Gas fire-extinguishing facility |
| JP2017209524A (en) * | 2009-10-23 | 2017-11-30 | エア・ウォーター防災株式会社 | Fire extinguishing gas injection device |
| JP2021104350A (en) * | 2009-10-23 | 2021-07-26 | エア・ウォーター防災株式会社 | Noise suppressor |
| US11639676B2 (en) | 2019-06-17 | 2023-05-02 | Tenneco Automotive Operating Company Inc. | Vehicle exhaust system |
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